{
 "nbformat": 3,
 "nbformat_minor": 0,
 "metadata": {
  "name": "old"
 },
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Old one"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "1+1"
     ],
     "language": "python",
     "metadata": {},
     "prompt_number": 3,
     "outputs": [
      {
       "output_type": "pyout",
       "prompt_number": 3,
       "metadata": {},
       "text": [
        "2"
       ]
      }
     ]
    },
    {
     "cell_type": "code",
     "input": [
      "boom"
     ],
     "language": "python",
     "metadata": {},
     "prompt_number": 4,
     "outputs": [
      {
       "output_type": "pyerr",
       "ename": "NameError",
       "evalue": "boom",
       "traceback": []
      },
      {
       "output_type": "stream",
       "stream": "stderr",
       "text": [
        "warn\n"
       ]
      }
     ]
    }
   ]
  }
 ]
}